berry



(No Model.) 2 Sheets-Shed 1.

J. BERRY.

ELEVATOR. No. 309,757. Patented Dec. 23,1884.

Jay. 1 July. 13

(No Model.) 2 Sheets-Sheet 2;

J. BERRY.

ELEVATOR.

No. 309,757. Patented Dec. 23, 1884 Ell IS I1 N, PETtns. PholwLvtMgrmpharjWAshingtmL D. C.

- device applied to ahinged door.

Miran STATES JAMEs BERRY, OF BUFFALO, NEW YORK, ASSIGNOR OF ONEHALF ro WILLIAM I. WILLIAMS, OF sAME rLAoE.

' E L EVATO R.

, SPECIFICATION forming partof Letters Patent No. 309,757, dated December 23, 1884.

Application filed April 29, 1 884. (No model.)

To 00 whom, it may concern Be it known that I, JAMEs BERRY, of the city of Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Elevators, of which the following is a specification.

This invention relates to an improvement in the doors which separate the elevator-shafts from the floors through'which .said shafts extend. a

My improvements are more particularly de signed for that class of elevators or hoists which are used in tenement-houses, stores, warehouses, &c., and which are used or operated by many different persons who should have ready access to the elevator car or platform from any floor.

The object of my invention is to provide the doors of these elevators with simple and efficient automatic locking devices, whereby the doors are securely locked and prevented from being opened except when the elevator car or platform has arrived opposite the door, and whereby the door is closed automatically as soon as the elevator car or platform is removed from the door either upwardly or downwardly, thereby preventing accidents and rendering the use of these elevators safe and convenient.

YVith these ends in view my invention consists in the improvements which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, consisting of two sheets, Figure l is a sectional elevation of an elevator provided with my improvements, showing the elevator-platform opposite one of the doors and the door opened. Fig. 2 is afragmentary sectional elevation of the same parts 011 an enlarged scale, showing the platform slightly raised and the door closed. Fig. 3 is a horizontal section on line as m, Fig. 1. Fig. 4. is a vertical section, and Fig. 5 a horizontal section, showing my improved locking Fig. 6 is an elevation, and Fig. 7 a horizontal section, showing my improved locking device-applied to a sliding door.

Like letters of reference refer to like parts in the several figures.

A represents the elevator platform or cage, constructed in any suitable manner, and provided with a hand or power hoisting mechanism, as may be desired.

13 represents one of the floors, and O a vertically-movable door sliding between vertical frames or ways 0, and provided with counterbalancing-weights, whereby the greater portion of the weight of the door is counterbalanced, so that the door can be readily raised. The weight of the door preponderates, however, so that the door descends automatically when released.

D represents a spring-catch attached to one of the frames or ways 0 of the door on the side neXt the elevator, so that the catch cannot be reached when the door is closed. The catch D consists of an arm pivoted to a plate, d, and provided with a spring, d,whereby the catch is held in engagement'with a shoulder or stop, e, formed on the inner side of the door in such manner that the engagement of the catch with the shoulder prevents the door from being raised or opened.

f is a sliding bar pivoted to the lower end of the catch D and projecting toward the elevator-platform.

f is a roller attached to the inner end of the barf.

G is a cam or projection attached to the ele vator-platform in such a position that it will come in contact with the roller f and disengage the catch D from the door when the platform isin line with the floor, as represented in Fig. 1. The upper and lower ends of the cam G are curved or inclined to facilitate the engagement of the cam with the roller. As

soon as the platform moves above or below the floor the cam G releases the catch and the latter projects and locksthe door, as represented in Fig. 2.

H represents a similar spring-catch applied to the upper portion of one of the ways orside frames,0,of the door.v The catch H is turned downward, so as to lock the door in an elevated position, andis provided with aspring,h, whereby it is held in contact with a shoulder or stop, h, on the door, and with a roller, h

I rep resents a cam or actuating bar attached to the platform or cage, and composed of an upper and lower projecting portion, 7? t, and an intermediate receding or jdepressed portion, i; The cam I is so arranged on the platform or cage that when the latter is in line with the floor the depressed portion 2" of the cam I is opposite the roller if, whereby the catch H is permitted to project and lock the door 0 in an elevated position, as represented in Fig. 1. WVhen the platform or cage moves out of this position either upwardly or downwardly, one of the projections, i, engages with the roller h and disengages the catch from the door. As the weight of the door preponderates, the latter immediately descends and is locked in a closed position by the lower catch, D. It will thus be seen that the door cannot be opened from the floor except when the elevator-cage is in line with the floor,and that as soon as the cage leaves this position the door is automatically closed and locked. A person desiring to use the elevator is there by compelled to place the elevator in the proper position before the door can be opened,and the closing of the door is eifected automatically without requiring any care or attention on the part of the person using the elevator, whereby all liability of accidents arising from an improper opening of the doors or a failure to close the doors is avoided.

Figs. 4 and 5 represent the application of the lower catch, D, to a hinged door. In this case the upper catch, H, is not necessary, as the door can be closed automatically by springs applied to the hinges or other suitable devices.

Figs. 6 and 7 represent the catches D and H applied to a door sliding on horizontal ways. In this case the door is closed automatically by weights J, attached to the door by cords j. The catches D and H and the opcrating-cams G and I can be arranged at the same height and on opposite sides of the door, as shown in these figures.

I claim as my invention 1. The combination,with the elevator-well, the cage, and the sliding door adapted to be antomatically closed when released, of the automatic locking device, whereby the door is locked in a closed position, the cam attached to the cage, whereby this locking device is re leased when the cage is opposite the door,the automatic locking device,whereby the dooris locked in an open position, and the cam attached to the eage,whereby the last-mentioned locking device is disengaged and the door caused toclose automatically when the cage is moved out of its proper position, substantially as set forth.

2. The combination,with the elevator-well, the cage, and the sliding door adapted to be antomatically closed when released, of the springeatch D, whereby the door is locked in a closed position, the spring-catch H, whereby it is locked in an open position, and. the cams G and I, attached to the cage, whereby the catches D and H, respectively, are disengaged from the door, substantially as set forth.

W'itness my hand this 17th day of April, 1884.,

JAMES BERRY.

Vitnesses:

GEO. E. PITMAN, CARL F. GEYER. 

